If you have trouble restoring your purchases inside Zen Pinball 2 on Mac please try the following solutions:
1. Have you tried the restore tables button, that is located in the bottom right of the main menu and has a shopping cart on it? It will attempt to download all of the tables you own at the same time.
2. If the restore button doesn't work, you can also try signing out from the App Store then sign in again. After this, please start the game again and try to download your tables either by clicking on their icons or the aforementioned restore tables button.
If you still have trouble getting your tables to work, please use the New Support Ticket option above.